Chemistry GCSE: Separation Techniques

Simple distillation

________ is used for separating out a liquid from a solution.

salt

The ________ passes through the filter paper as it's part of the solution.

dry crystals

Evaporate the water from the salt so that it form ________.

water evaporates

The ________ and is condensed and collected.

(use a pencil to do this

pencil marks are insoluble and won't dissolve in the solvent)

Make sure the ink isn't touching the solvent

you don't want it to dissolve into it

Each dye will form a spot in a different place

1 spot per dye in the ink

The problem with simple distillation is that you can only use it to separate things with very different boiling points

if the temperature goes higher than the boiling point, they will mix again

The different liquids will all have different boiling points

so they will evaporate at different temperatures